Ok So I'm going to do a list of bugs in alpha 4 for Mac, I've ran into many already in the first 30 minutes of play.

Holograms NEVER disappearCrew members randomly disappear when shotCrew Members disappear when being teleported to or back from an enemy shipCrew members on either side die and then re-appear in space or upon clicking a notification about them dying the ship disappears and leaves a 4x4 area where the body isTutorial screens never go away during some playson rare occasions the enemy ship randomly explodes

additionally there seems to be no way to go to planets, and every time I travel to star systems, it never actually takes me there according to the map.